First-patented, permanent anti-microbial treatment stops bacterial growth and prevents odors. Barricade treatment greatly extends the service life of the mop. First-patented Infinity Twist yarn won't fray or unravel and eliminates fiber loss during use and washing. Comes pre-laundered and ready to use. Longest lasting dust mop made. Date coded to monitor product life. Synthetic orange backing. Safely laundered in any machine.